1 to be secretly in love with

1 vague

2 ambiguous

3 equivocal

4 dubious

1 dark

2 darkly

3 darkness

1 ignorant

2 uneducated

3 ignorance

1 dusky

1 of great reputation but shallow in knowledge (idiom)

1 stupid and ignorant (idiom)

1 to pick up money and not hide it (idiom); to return property to its owner

1 The honest person does nothing underhand (idiom).

2 fig. Do what you want to do openly and without dissimulation.

1 lit. repair the plank road by day while secretly crossing the Wei River 渭河[Wèi Hé] at Chencang (idiom, refers to a stratagem used by Liu Bang 劉邦|刘邦[Liú Bāng] in 206 BC against Xiang Yu 項羽|项羽[Xiàng Yǔ] of Chu)

2 fig. to feign one thing while doing another

3 to cheat under cover of a diversion